Method of decorating metal surfaces



March 14, 1933. I K, TAKEDA i 1,900,960

METHOD OF DECORATING METAL SURFACES Filed Jan. v19, 1951 Patented Mar. 14, 1933 v UNITED STATES JAPAN manon or nnoomrme neral. sunraom application mea January 1a, man. serial ne. 509,671.

'lhc present invention relates to an im, 'proved method for producing metal inlaid work which substantially consists in pressing a metal plate with any patterns perforated by etching or the like into metal surfaces to be inlaid. The object of the invention is to' provide-a new improved method, by means of which metal marquetry with highly decorative edect may-be produced, atterns of diflerent kinds or coloursbeing inlaid quite easily on metal surfaces, Where desired.

ln the accompanying drawin Fi 1 shows by Wa of example a plan o an i aid metallic article (a tray) produced by the resent invention, Fig. 2 is a section of same, ig. 3 is an enlarged section of art of same, Fig. d is an enlarged section just fore pressing, Fig. 5 is an enlarged section after compression. Fi 6 is a plan of an example et the pattern p ate, and Figs. 7 and 8 are enlarged sections of part of same.

ln the present invention aluminium plates are chiey used as the material for articles to be inlaid, but any other soft materials, such as copper, silver, etc. may be employed instead, vvhen desired. The pattern plate (2) is of material, preferably a little harder than that of the plate (1) to be inlaid; for example, the plate ,(2) may be of co per, brass,

or other metals electroplated 1n did'erent colours, or aluminium or silver articles. The attern plate has perforations of reticulate form or any other patterns formed by etching. lt is placed on the metal surface 1) and both plates are pressed strongly u on the maleor female-mold or the anvil F5) tive surfaces may be carried out by first perforating and formin as, for example, by etching, a pattern o suitable design from relatively hard material, and thereafter placing the pattern and plate or article to be decorated', the latter being of relatively softer material than that of the pattern, on a rctatable male or female mold, de nding upon the character of the article to decorated, and by rotating the mold together with the plate and pattern, and gradually exerting a pressure on the plate adjacent the pattern and at the opposite side `of the plate therefrom, preferably, by means of a roller or' `thereby more thoroughly displacing the material of the plate in diderent directions at the perforations to more uniformly lill the perforations adj aoent the exposed surface of the pattern and provide a more complete anchorage of the pattern in the material of the article to be decorated.

When perlorationsy are formed by etching from both sides more material is eaten out near the surface than the middle part of the plate, so that the section of the side of the perforation will form a curved line projecting inwards at the middle point, as shown in Fig. 7, While the perforations is of truncated conical form, when etched from one side, as shown in Fig. 8. In both cases patterns may be firmly held by the plate (1) through the material of the latter displaced and completel filling up the perforations of these speciaisectional forms. A complete connection of both plates ma further be secured by the inner side of per orationswhich presents a rough and uneven surface when made by etching, and which is completely iillcd up by horizontal displacement of the The present method of producing decoramaterial of the plate (l) lt Will be observed rom the fore oing description, that by reason of the Working of the material of the plate (l) into the perforations having the peculiarly formed sides as illustrated in Figs. 7 and 8, that a most complete an'd secure anchorage of the pattern (2) with the plate (1) is obtained.

ln the case of patterns formed not by etching part of the material may be displaced horizontally about the perforation during the compression, so that detachment of the pattern plate is also out of question.

I claim.:

1. The method of decorating metal surfaces which consists of forming a perforated pattern of relatively hard metal, positioning the pattern on the surface of an article to be decorated, formed of relatively softer metal, placing the pattern and article on a mold, and thereafter rotating the mold, article and pattern in opposite directions While exerting a pressure thereon to force the softer material of the article into the perforations and around the harder material of the pattern.

2. The method of decorating metal surfaces which consists of forming a perforated pattern of relativ^ly hard material by etch ing, positioning vthe pattern on the surface of an article to he decorated formed of relatively softer metal., placing the pattern and article on a mold, and thereafter rotating the mold, article and pattern inopposite directions While exerting a pressure thereon to force the softer material of the article into the perforations formed in the pattern and around the edges thereof.

3. The method of decorating metal surfaces which consists of forming a perforated pattern of relatively hard material by etch ing, positioning the pattern lon the surface of an article to be decorated formed of relatively softer material, placing the pattern and article on-a mold, and thereafter rotating the mold, article and pattern alternately in opposite directions While exerting a pressure thereon to force the softer material of thearticle into the perforations formed in the pattern and around the edges thereof.

4. The method of decorating metal surfaces Which consists of forming a perforated pattern of relatively hard material by ,etching, positioning the pattern on the surface of an article to be decorated formed of relatively softer material, placing the pattern and article on a mold, and thereafter rotat- 1 ing the mold, article and pattern alternately in opposite directions while exerting a ressure thereon by a rolling Contact to force the softer material of the article through the perforations and around the edges of the pattern to the exposed surface thereof.

KENJIRO TAKEDA.. 

